Locomotive front end



.lan. -l, 1946. L R. PYLE 2,392,187

LOCOMOTIVE FRONT END Filed Dec. l1, 1944 3 Sheets-Sheet Jan. l, 1946. L. R. PYLE LocoMoTIvE FRONT END FiledDec. ll, 1944 5 Sheets-Sheet 2 Jan. l, 1946. l.. R. PYLE LOCOMOTIVE FRONT END Filed Deo. 11, 1944 S'Sheets-Sheet 5 Patented Jan. 1, 1946 .LodoMofrlvE FaoNTfENn f Leslie Pyle, Chicago, ',Ill., assigner to .Locomo tive Firebox Company," Chicago, Ill., 'a corporation of Delaware Application December' 11, 1944 serial No. 567.706 f This invention relates to improvements in locomotive front ends and it consists of the matters hereinafter described and more particularly pointed out in the 'appended claims. The invention ismore especially concerned with front ends that include spark arresting vanes arranged to impart a whirling action to the products of combustion entering the iront end for entrainment up the stack under the action of the exhaust steam discharged by a nozzle arranged in line with said stack.

One of the objects oi the invention is to Drovide a vane arrangementior the front end, which avoids the necessity of one or more bottom bafe plates, which is of a more simple construction for low cost production and which may be readily installed in the iront end.

Anothervobject of the invention is to provide a vane arrangement of this kind which is more free of such obstructions that promote the -accumulation of the cinders and the like in the bottom of the smoke box shell and whereby the shell remains in a cleaner condition for longer periods of times between service operations. A .A vfurther Iobjectofflthe invention is to provide avvane arrangement for the front end which may be more readily disassembled and removed from the frontend "to permit better access to super` heater and like parts-inthe front end, as well as to the ends of i the iiues in the flueY sheet at the rear end of the smoke -box` shell. The above mentioned objects of the invention, as'iwell as others, together with the advantages thereof, will more fully appear as the specification proceeds.

In the drawings: A f Fig. .1 is-a longitudinal vertical sectional view through a locomotive front end embodying the preferred formof the invention. Fig. 2 is a rhorizontal detail 'sectional view through a part of vthe front end structure shown in Fig. 1 on the. line 2--2 thereof and on a-'scale enlarged-thereover.v .I Y

Fig. 3 is a view similar to Fig. 2 as taken on the line 3-3 of Fig.`1. v -v Fig..4 isa `transverse vertical sectionalA view through the front endstructure shown in Fig. Il: as takenon .the line 4'4 thereof and on the scale ofFigs.'2and3."`. 1..;1 ."Figs. 5 yand 6` are detail vertical sectionalv views through parts of the front end structure appear-` ingin Fig; 2.as taken on the lines 5 5 and 6-8 respectively. on. Figsz andi onfa.V scale enlarged thereo'ver.": :si: .fag- 1 y. g. e; illig.-v lisaperspective. view of one ofthe plate L taken on the lineV 8-8 and on a scale enlarged over that of Fig. 4.

Fig. 9 is a horizontal Ldetail sectional view through parts shown` in Fig. 8 as taken on the line 9 9 thereof.

yiti

Fig. 10 is a detail vertical sectional view on the line l-IO ofFig. 2 -andnon a, scaleenlarged thereover. y Y,

Fig.11 is la detail horizontal sectional view .as taken on the line -I I-I I of Fig. 10. j

Referring now in detail to that embodiment of the invention illustrated in the drawings, III in-` dicates as a whole the tubular body of a locomotive smoke box shell whichy is connected at its rear end to the front end of the boiler shell II.v in a conventional manner. The interior of the smoke box shell is separated from the interior of the boiler shell by a flue sheet I2.Y Flues I3 open through the sheet I2 so as to discharge products of combustion into the smoke box shell. In Fig.

^ 1n only one of said flues isshown and this. is in.

dotted lines. I4 indicates the front of the smoke box shell which is provided with 'the usual door.- At the bottom of the smoke box shell is a'iloor plate I5. y ,4

I6 indicates the Aflanged base for the .smoke stack. Said base isdirectlyattached to the top of the body Ill of the smoke box shell about an opening I1 therein. The smoke stack has a tubu-v lar extension portion'or lift pipe I8 ixed `to lits bottom end and said portion depends into Athe interior of the body ofthe smokebox shell as best Y appears in Fig. 1. The exhaust pipe which is indicated at I9 rises from the bottom of the body of -the smoke box -shell in` axial alignment with the tubular portion of thestack. Said pipeis provided at the top with an exhaust nozzle or tip 20 of any approved kind. Y l ll Inl the body I0 of the smoke box shell is located a spark arrester ofthe so-called circumfereng tially open, centrifugal separator type which is indicated as a-whole in Figs. 1 and 4 at 2|. Said arrester, which is cylindrical in shape, has-its axis arranged in alignment with the axes of the por-V tion I8 of the stack and the nozzle or tip 20 v'of the pipe I9 respectively.`

The spark arrester includes a circular top plate 22 disposed substantially in the plane of the bot# toin end of the stack portion and which in turnv bottom-of each pla-te 3 1.-

, .pearing in perspective in Fig. 7. Welded to one end of each semicircular part is a strip that overlaps, .the part of theother. end of;

each parti andiisjggoperatvely secured-*thereto as by boltszt as best appears in Fig. 1; nach plate part 23-24 has a' semi-circular cutout to embrace.

a part of the stack portion I8. Following about each cutout is a semicircular attaching member;

or flange 21 having straight ends 28. ',Ihecentrai bottom portion of eachwmember "2] isweldedi to the associated plate part 'as' at '29so that `the ends of said member will have a springy action.

Said ends of said members 21;!'1 areloperatlvely drawn together by bolts and associated nuts 3D..

When the nuts are drawn up tight, the ends Vof thev members. fil- 2 arexirawn together.y with a clamping grip action `upon the stack portion. By removingitheltvoltsi .andaj-ZB it is obvious that fthe plaie. parts-FISA# be separated fromeachiothersfor, removal andreplacement..

Associated with the front and rear'gplateparts 234-24 are :sets of .trontrmrdlrear `perpendicular defiiector plates vfor' vanes' 3| `and .32 respectively', arranged to occupy a circular areagzonpath about the peripheralgmarginssotthe top: plate` 22 as a. Whole. "The deflection.V plates .'are. dis-posed. tan-4 gentially with respect to the axis of .the..staek portion antifa-re operatively-'attached Y:atytheir upper ends to therespective plate1 ;parts 523-.-24 and .at the lower-.andato the .bottom of 'the .body of fthe shelldilorfto thexiloortplate :l5 thereon:

' Thelowerendportion'of .each deilectorrplate Sli-'32 is ieutztoishapeto correspondtothe con*- tourof that-part of Vthenoor .plate it is to .occupy and on -saidiooryplate andY arranged in the patternin which the. edeiiectory plates :are disposed arempstanding, angelike parts 33, onefor each deflector plate. `Said lower vend portion of each the axis of the stack portion I8, they also extend inwardly from the outer circle of the plate parts 23-24 to terminate short of the stack portion I8.V

Within the upper portion of the interior of the arrester 2| is loca-ted another set of deector vanes 40 of an auxiliary character and which are supported from. the plate...parts 23e-,24. Y The varies 411,which are alsodisposed-tangentiauy of the axis of the stacks portion, extend in a direction opposite that of the varies 3I-32. The vanes 40 are secured in arcuately spaced relation '.bytopandebottom end rings 4| and 42 of a diameter approximating that of theY bottom end of 'thestack portionl. The upper ring is provided Wiithlaterally extending ears 43 and bolts 44 pass Vthrough said ears and portions of the plate parts 23` .and-iin' thereabove. Nutsrare provided for said bolts and when said nuts are4 drawn up tight, this clamps the deflector vanes in place withy the. upper ring Yin engagement .with the. 'bottom edge ofthe stack portion .l 8. 1 5

With the arrangement described, it is-.ftobe noted fffgrom Figs, 1 Vand -4 that .room .or space :is presen-t :at `,opposite sides of; the .arrester-:for the passage of steam pipes :45 which lead to fthe mdf' index-s fofV the locomotive. These pipesi have.. a iiangedupper end .Qonnectionz with superheater header-s 46 located :thezupper rearportionapf tnersmoke-boxshell.`Y Said pipessandhearlersras well as superheater tubes 41 best appear intimated lines i-n sa-idlFigs lande. 1 w f' YIn .the operationoff-thelocomotivef' which the fdesc-ribed `construction, terms a "the Y productsof combustion enter. theinterior yozfatile body of the smoke -box shell fromzthe-ues'nnder the draft action inducedyby;the` exhaustzsteam jet discharged by the nozzle j.20.. Such y.protl1icts` of--combuston vary insize, some beingpwrelatiwely 'ne'and lightV in weightamd /othersnbeingyrela-f plaitetengagesgatwi'se'against itstowni ange :like

part andi' is .-:detazchably secm'ed' thereto .by `a. :bolt l and.essociated:nut34, th'ebolt passing through aligned ivprilgsln" saidzvplate ,and part ..33 me- Spectively. .1' 2

Depending from the underside of both platel parte.: 23?;24 arefA larl'geelike parts.; 23ayfan-d 24a respeetiveiyarranged yin thepattern in which the deiieotori plates .1314-92 .are disposed. The upper endzfofthe plates 24:are.;secured to .the .anges 24a.fby`:b.olts and associated::nuts 35.. Extending throughv each iiange part isa key. bolt 3B.

The headed end-of each-boltissecured against loss from the associated plate part23 by a cha-in 3 31.V The lothenend 'of said .key bolt .has a longitudinal -slot therein` to :receive-al wedge 38; where'- byf the upper. vendA each deflect-or; plate si. .is detaeh'ably securedf-totheiplate part 23a.-V

l tuted by flat plates, are each provided on'-op postte .sides toward @but spaedrdifterent distances from-.the .router end-;thereof .1- with frightfangled den l iiectorwingsforvbaiiiesia+-32ajrespectively- `The deiiectoryfwings'. 32av extend theitfull .heightof rthe associated-deflector plate 32.`.wlii1e, the delector wings. 3,111 extend onlyv ipart -Wayi upf from the While the deflector platesfr-? llave-breien tively heavyandgin @the form of lcinderazgsome :of which may. beeglow-inggandin the iorxntofrsparks: -As Y:theproducts of combustion fen-ter :thebodyeoi the smoke box shell,ithey travel iniaisubstahtmly horizontal piane tmivard.. the farresterllgf.- 5 .the discharge-.otexhaust steam :from the'gnozzleznp thepstack portion fl'sga subatmospheric nctmuiition is established so that the product-s ofxcombustion pass .f `through g. the passag.es f.y .between the 3I3.2 to enter the Tarrest/eri? I antiche aentrained for passage up and .outtieren-gir,A the stack.: in

thisv movement vof ysaid products 1of '.fcombuston,

certain particles `thereof impirlge-the-baiiiefplates 31a and 3 2a vand .are :broken 11p into smaller.' pieces for a better extinguishment thereozfzafhirthel; more, in said movement thee'vanesjimpart. a swirling g motion of said products-inf.; combustion ione r'direction. yHowever,y estrie; variesv Muere directionally Opposedzfto. the '.plates.v fir-Manus '3l-327,V :saidA -vanes f 49 tend -1 ;to..;.counteracts;sa;id whirling-action so` that `the particles sa.izriproude` ucts ,of combusti-amare directedbazck towsardnd into the blast for entrainmentsoutithnonghdzhe Stack.. 'Y f: :2 filial.

It is to be noted that the arresterit'soien the. plate. 22.1110. thel bottom". pfzthei smoker-htx- Y shell or. the iiooryplatethereini i. Theneforench particles of the products .off combustionfasxna'y not directly enter the arrester by' passagewaysfbetween thefplatessor 'names 31a-32 are fkept fin fa state. .of .turlmienceiinthe of .the-shellwithin thegarea. ofthe arresten fSuciI' particles inf their.; movement.- eventually." caught in the blast produced by the 2,392,1'svI access is had to superheater headers, tubes, steam pipes and the ilue sheet for whatever service is necessary. Thereafter the arrester may be reassembled in operative position in the smoke box shell.

While in describing the invention I have referred in detail to the form, arrangement and construction of the parts involved, the same is to be considered only in the illustrative sense so that I do not wish to be limited thereto except as may be specifically set forth in the appended claims.

I claim as my invention:

l. In combination with the smoke box shell of a locomotive boiler, a smoke stack having a bottom end portion disposed in said shell, a nozzle at the bottom of said shell arranged to discharge exhaust steam into said stack portion, a plurality of vanes arranged in a circular path about said stack portion and extending downwardly therefrom toward the bottom portion of said shell, means for attaching the lower end of said vanes to said bottom of said shell, and means surrounding a part of said stack portion and extending outwardly therefrom and to which the upper ends of said vanes are attached.

2. In combination with the smoke box shell of a locomotive boiler, a smoke stack having a bottom end portion disposed in said shell, a nozzle at the bottom of said shell arranged to discharge exhaust steam into said stack portion, a plurality of vanes arranged in a circular path about said stack portion and extending downwardly therefrom toward the bottom portion of said shell, a plurality of members projecting upwardly from said bottom of the shell, one for and attached to the lower end of each vane, and means surrounding a vpart of said stack portion and extending outwardly therefrom and to which the upper ends of said vanes are attached.

3. In combination with the smoke box shell of a locomotive boiler, a smoke stack having a bottom end portion disposed in said shell, a nozzle at the bottom of said shell arranged to discharge exhaust steam into said stack portion, a plurality of vanes arranged in a circular path about said stack portion and extending downwardly therefrom toward the bottom portion of said shell, means for attaching the lower ends of said vanes to said bottom of said shell, means surrounding a part of said stack portion and extending outwardly therefrom, a plurality of members depending downwardly from said means, one for the upper end of each vane, and means for attaching the upper end'of each vane to an associated depending member.

4. In combination with the smoke box shell of a locomotive boiler, a smoke stack having a bottom end portion disposed in said shell, a nozzle at the bottom of said shell arranged to discharge exhaust steam into said stack portion, a plurality of vanes arranged in a circular path about said stack portion and extending downwardly therefrom toward the bottom of the shell, means for attaching the lower ends of said vanes to said bottom of said shell, means surrounding a part of said stack portion and extending outwardly therefrom and to which the upper ends of said vanes are attached, and a split ring carried by said means and operable to have a clamping grip on said stack portion for operatively securing said means to said stack portion.

5. In combination with the smoke box shell of a locomotive boiler, a smoke stack having a bottom end portion disposed in said shell, a nozzle at the bottom of said shell arranged to discharge exhaust steam into said stack portion, a plurality of vanes arranged in a circular path about said stack portion and extending downwardly therefrom toward the bottom of the shell, means for attaching the lower ends of said vanes to said bottom of said shell, means surrounding a part of said stack portion and including a plurality of arcuate plate-like parts and which plate-like parts extend outwardly from said stack portion, means for attaching the upper end of said vanes to said plate-like parts, split ring parts carried by said plate like parts and surrounding said stack portion, and means operatively connecting the ends of said ring parts for drawing them together in a clamping grip upon said stack portion.

6. In combination with the smoke box shell of a locomotiveboiler, a smoke stack having a bottom end portion disposed in said shell, a nozzle at the bottom of said shell arranged to discharge exhaust steam into said stack portion, means surrounding the lower end of said stack portion and including a plurality of plate like parts extending outwardly from said stack portion and having overlapping ends, a split ring part xed to each plate like part, said split ring parts surrounding said stack portion and being operable to clampingly grip upon said stack portion, means associated with said overlapping ends of plate-like parts for connecting them together, a plurality of vanes having their upper ends detachably secured to and depending from said plate-like parts toward the bottom end of said shell and means for operatively securing the bottom ends of said vanes in Aposition relative to smoke box shell.

'7. In combination with the smoke box shell of a locomotive boiler, a smoke stack having a bottomend portion disposed in said shell, a nozzle V .at the bottom of said shell arranged to discharge exhaust steam into said stack portion, means surrounding the lower end of said stack portion and including a front plate-like part and a rear plate-like part, said plate-like parts projecting outwardly from said stack portion and having overlapping ends, means for detachably connecting the overlapping ends of said plate-like parts together, means for detachably securing said plate-like parts to said stack portion, a plurality of vanes arranged in sets in a circular path about said stack portion, there being a set of each vanes associated with each plate-like part, and depending therefrom toward the bottom of the smoke box shell, means for securing the upper end of the vanes in one set to said rear platelike part, means for securing the lower end of the vanes in said one set to said bottom of said shell, means for detachably securing the upper end of the vanes in the other set to said front plate-like part, and means for detachably securing the lower end of the vanes in said other set to said bottom of said smoke box shell.

R. PYLE. 

